RIAA targets P2P users on corporate networks

It looks like file traders using P2P file sharing networks at the office are the next group to fall under the RIAA's scrutiny. C|Net reports:

The Recording Industry Association of America (RIAA), the Motion Picture Association of America (MPAA), and the International Federation of the Phonographic Industry (IFPI) are jointly distributing a brochure warning of the dangers of Internet piracy to hundreds of corporations around the world. The document, which is going out to the Fortune 1000 companies in the United States, urges the companies to crack down on employees' copyright infringement--or face legal consequences.

Regardless of whether file swapping of copyrighted works is considered illegal, immoral, or OK for those that "wouldn't have bought the CD anyway," it's surprising that network admins are letting P2P applications eat up corporate bandwidth. Somehow, I don't think many Fortune 1000 companies will have much of a problem prohibiting file sharing on their networks. After all, how many employees can really justify downloading the latest DivX screener at work?